Not sure if there's a better place for this post?

Every time I try and launch the softsynth Yoshimi, the process pops up in the system monitor and just otherwise invisibly sits there, using between 80 and 100 % CPU. Computer fan starts whirring, and I have to kill the process if I want it to go away. Launching in Terminal literally gives me nothing besides the process running. I also tried completely removing and reinstalling the yoshimi and yoshimi-data packages in Synaptic. And Yoshimi worked before! Just yesterday, in fact.

Any help would be appreciated. I'm currently using 12.04 on a Macbook Pro.